// Self-executing function to create and register the TinyMCE plugin
(function(siteurl, $) {
    window.id = 'wordpress-post-page';

    tinyMCE.addI18n('en.ngg_attach_to_post', {
        title: 'Attach NextGEN Gallery to Post'
    });

	// Create the plugin. We'll register it afterwards
	tinymce.create('tinymce.plugins.NextGEN_AttachToPost', {

		/**
		 * The WordPress Site URL
		 */
		siteurl: siteurl,

		/**
		 * Returns metadata about this plugin
		 */
		getInfo: function() {
			return {
				longname: 'NextGEN Gallery',
				author: 'Imagely',
				authorurl: 'https://www.imagely.com',
				infourl: 'https://www.imagely.com/wordpress-gallery-plugin/nextgen-gallery/',
				version: '0.1'
			};
		},

		/**
		 * Initializes the plugin, this will be executed after the plugin has been created.
		 */
		init: function(editor, plugin_url) {
            var self = this;

            // TinyMCE 4s events are a bit weird, but this lets us listen to the window-manager close event
            editor.windowManager.nggOldOpen = editor.windowManager.open;
            editor.windowManager.open = function(one, two) {
                var modal = editor.windowManager.nggOldOpen(one, two);
                modal.on('close', self.wm_close_event);
                return modal;
            };

			// Register a new TinyMCE command
			editor.addCommand('ngg_attach_to_post', this.render_attach_to_post_interface, {
				editor: editor,
				plugin:	editor.plugins.NextGEN_AttachToPost
			});

			// Add a button to trigger the above command
			editor.addButton('NextGEN_AttachToPost', {
				title:	'ngg_attach_to_post.title',
				cmd:	'ngg_attach_to_post',
				image:	plugin_url+'/atp_button.png'
			});

			/**
			 * Listen for click events to our placeholder
			 */
            editor.on('mouseup', function(e) {
				tinymce.extend(self, {
					editor: editor,
					plugin: editor.plugins.NextGEN_AttachToPost
				});

				// Support for IGW placeholder images. NGG <= 2.1.50
				if (e.target.tagName == 'IMG') {
					if (self.get_class_name(e.target).indexOf('ngg_displayed_gallery') >= 0) {
						editor.dom.events.cancel(e);
						var id = e.target.src.match(/\d+$/);
						if (id) id = id.pop();
						self.render_attach_to_post_interface({
							key: 'id',
							val: id
						});
					}
				}
				// Support for IGW Visual Shortcodes. NGG >= 2.1.50.1
				else {
					var $target = $(e.target);
					if ($target.parents('.nggPlaceholderButton')) {
						$target = $target.parents('.nggPlaceholderButton');
					}
					if ($target.hasClass('nggPlaceholderButton')) {

						// Remove button
						if ($target.hasClass('nggIgwRemove')) {
							$target.parents('.nggPlaceholder').remove();
						}

						// Edit button
						else {
							window.igw_shortcode=  $(e.target).parents('.nggPlaceholder').data('shortcode');
							self.render_attach_to_post_interface({
								key: 'shortcode',
								val: btoa(window.igw_shortcode),
								ref: $(e.target).parents('.nggPlaceholder').attr('id')
							});
						}
					}
				}
			});

			/**
			 * Find each shortcode and replace it with the placeholder, rendered using an underscore template
			 * in templates/tinymce_placeholder.php
			 */
			editor.on('BeforeSetContent', function(event){
				var shortcode_opening_tag = '[ngg_images ';
				while (event.content.indexOf(shortcode_opening_tag)>=0) {
					var start_of_shortcode = event.content.indexOf(shortcode_opening_tag);
					var index = start_of_shortcode+shortcode_opening_tag.length;
					var found_attribute_assignment = false;
					var current_attribute_enclosure = null;
					var last_found_char = false;
					var content_length = event.content.length;
					while (true) {
						var char = event.content[index];
						if (char == '"' || char == "'" && last_found_char == '=') {
							// Is this the closing quote for an already found attribute assignment?
							if (found_attribute_assignment && current_attribute_enclosure == char) {
								found_attribute_assignment = false;
								current_attribute_enclosure = null;
							}
							else {
								found_attribute_assignment = true;
								current_attribute_enclosure = char;
							}
						}
						else if (char == ']') {
							// we've found a shortcode closing tag. But, we need to ensure
							// that this ] isn't within the value of a shortcode attribute
							if (!found_attribute_assignment) {
								break; //exit loop - we've found the shortcode
							}
						}

						last_found_char = char;

						if (index == content_length) {
							break;
						}

						index++;
					}

					// Replace the shortcode with a placeholder
					var match = event.content.substring(start_of_shortcode, ++index);
					var shortcode = match.substring(1, match.length-1);
					shortcode = shortcode.replace('[', '&#91;');
					shortcode = shortcode.replace(']', '&#93;');

					var template = _.template($('#ngg-igw-placeholder').html());
					event.content = event.content.replace(match, template($.extend(ngg_igw_i18n, {
						shortcode: shortcode,
						ref: _.now()
					})));
				}
			});

			/**
			 * Whenever a request is made to fetch the content of the editor, substitute the IGW placeholders
			 * with the corresponding shortcode
			 */
			editor.on('GetContent', function(event){
				var $content = $('<div/>').append(event.content);
				$content.find('.nggPlaceholder').toArray().forEach(function(placeholder){
					var $placeholder = $(placeholder);
					var shortcode = $placeholder.data('shortcode');
					shortcode = '[' + _.unescape(shortcode) + ']';
					$placeholder.replaceWith(shortcode);
				});
				event.content = $content.html();
			});
		},

		get_class_name: function(node) {
			var class_name = node.getAttribute('class') ? node.getAttribute('class') : node.className;
            if (class_name) {
                return class_name;
            } else {
                return "";
            }
		},

        wm_close_event: function(e) {
            if (e && e.target && e.target._id && e.target._id == 'ngg_attach_to_post_dialog') {
                // Restore scrolling for the main content window when the attach to post interface is closed
                $('html,body').css('overflow', 'auto');
                tinyMCE.activeEditor.selection.select(tinyMCE.activeEditor.dom.select('p')[0]);
                tinyMCE.activeEditor.selection.collapse(0);
            }
        },

		/**
		 * Renders the attach to post interface
		 */
		render_attach_to_post_interface: function(params) {
			// Determine the attach to post url
			var attach_to_post_url = nextgen_gallery_attach_to_post_url;
            if (typeof(params) != 'undefined') {
				attach_to_post_url += '&' + params.key + '='+encodeURIComponent(params.val);
				if (typeof(params['ref']) != 'undefined') {
					attach_to_post_url += '&ref='+encodeURIComponent(params.ref);
				}
            }

			var win = window;
			while (win.parent != null && win.parent != win) {
				win = win.parent;
			}

			win = $(win);
			var winWidth    = win.width();
			var winHeight   = win.height();
			var popupWidth  = 1200;
			var popupHeight = 600;
			var minWidth    = 800;
			var minHeight   = 600;
			var maxWidth    = winWidth  - (winWidth  * 0.05);
			var maxHeight   = winHeight - (winHeight * 0.05);

			if (maxWidth    < minWidth)  { maxWidth    = winWidth - 10;  }
			if (maxHeight   < minHeight) { maxHeight   = winHeight - 10; }
			if (popupWidth  > maxWidth)  { popupWidth  = maxWidth;  }
			if (popupHeight > maxHeight) { popupHeight = maxHeight; }

			// Open a window, occupying 90% of the screen real estate
			this.editor.windowManager.open({
				url: attach_to_post_url,
				id: 'ngg_attach_to_post_dialog',
				width: popupWidth,
				height: popupHeight,
				title: "NextGEN Gallery - Attach To Post"
			});

			// Ensure that the window cannot be scrolled - XXX actually allow scrolling in the main window and disable it for the inner-windows/frames/elements as to create a single scrollbar
            $('html,body').css('overflow', 'hidden');
			$('#ngg_attach_to_post_dialog_ifr').css('overflow-y', 'auto');
			$('#ngg_attach_to_post_dialog_ifr').css('overflow-x', 'hidden');
		}
	});

	// Register plugin
	tinymce.PluginManager.add('NextGEN_AttachToPost', tinymce.plugins.NextGEN_AttachToPost);

})(photocrati_ajax.wp_site_url, jQuery);
